Differences to NeuS

[fatbao55]

Hi, thanks for the great work!

I was wondering what are the major differences to NeuS? When I was comparing the code, it seems that the main difference is the change in the sign of the outputs. I was wondering if there are any other changes in training to make it work better for UDF?

NeuralUDF/models/fields.py

Lines 210 to 211 in 1436d15

	return torch.cat([self.udf_out(x[:, :1]) / self.scale, x[:, 1:]],
	dim=-1)